锌

Reaction of the insertion adducts with epoxide s and α,β unsaturated esters in THF HMPA afforded the corresponding unsymmetrical selenides, respectively.

硒插入芳基锌的C—Zn键产生对应的芳基硒化锌，它与环氧或α，β不饱和酯在温和的条件反应生成对应的不对称的硒醚

Spinel is a compound of magnesia and alumina(Al2O3) and is thus a magnesium aluminate(MgAl2O4), found as accessories in igneous rocks, in metamorphosed aluminous schists, in contact metamorphosed limestones and sometimes in high temperature iore veins.

尖晶石主要成分是氧化镁和氧化铝，结晶习性是等轴晶系漂亮的正八面体。镁被铁置换就是铁尖晶石，被锌置换就是锌尖晶石，铁完全置换镁形成磁铁矿，铬置换铁尖晶石形成铬铁矿，这些类质同相的等轴晶系都是八面体结晶的尖晶石族矿物。

The formation mechanism of the cerium compounds on the zinc powder subst rate was preliminarily discussed , and the effect s of the cerium compounds on the cycle and discharge properties of the zinc elect rodes were also investigated.

L Ce (NO 3) 3溶液中成功制得含有铈化合物的锌基复合粉，探讨了铈化合物在锌粉基体上的形成机制，并研究了锌基复合粉中铈化合物对锌电极的循环放电性能的影响。

It is demonst rated that the cerium compounds on the zinc powder subst rate enhance the elect rochemical performance of the zinc elect rodes.

mAh.g - 1，表明在锌粉基体上形成的铈化合物可以改善锌电极的电化学性能。

Rope-to-Chain Spliced Rodes : One drawback of the normal combination rode with nylon and galvanized chain is the interface between them consisting of a shackle and a galvanized thimble.

锚缆绳和锚链叠接型：尼龙绳和镀锌锚链一般的结合有一个缺点就在于之间结合点由U形套钩和镀锌套管组成。

Measuring the zinc in ragworm jaws was thus thought of as a way of monitoring zinc pollution.

这样一来，检测沙蚕颌齿的锌就可以作为监测锌污染的一种手段。

It is well known that Huang-huai-hai Plain flourished around Han and Tang dynasties, not only boasted of the highly developed agricultural economy, handicraft industry and cultural education, but also of the population quality and proportion. while the physiognomy of the Plain has changed greatly since Song and Yuan dynasties due to the frequent deluge and the river course change of Yellow River, which caused the changes of the trace elements amount in the plain\'s soil, especially the decrease of virtual zinc which caused the cultural developing process to stagnate gradually after Song and Yuan dynasties. Trace elements like a invisible hand worked uniquely on cultural developing process.3The geographical environment and the morbid population of Lin Xiang Kingdom in Sun-Wu Kingdom Period.

二地理环境下的土壤微量元素的变化状况与历史时期黄淮海平原文明进程的关系：众所周知，汉唐时期是黄淮海平原地区文明程度最高的时期，不仅农业经济、手工业经济和文化教育高度发展，而且人口素质和人口比重也是占据极为重要地位；但是，由于黄河的频繁泛滥和改道，不仅造成了黄淮海平原地貌的巨大变化，而且也引发了黄淮海平原土壤微量元素的变化，以致有效锌严重缺乏，从而使得宋元以后的黄淮海平原的文明进程逐渐停滞下来；而在此过程中，土壤微量元素锌像一支看不见的手在起着独特的作用。

It could be concluded from potential and corrosion resistance of zinc platings that stabilizer could improve the stable potential and the corrosion resistance in 3.5% NaCl solution as well.

结果表明，稳定剂可以提高浸锌后试片的稳定电位，提高浸锌层在3.5% NaCl溶液中的耐蚀性。

Scanning electron microscope and electron despersive spectrum were used to analyze the micromorphology and composition of zinc platings and EN deposit.

利用SEM、EDS对浸锌层、化学镀Ni-P层的形貌和成分进行了分析，镀层结合力合格，并初步探讨了浸锌溶液中稳定剂的作用机理。

The company has three zinc platings and two colors to scribble the continuous production line at present , allocates advanced childbirth is equipped with and adopt the advanced productive technology, allocate detecting equipment all in readiness and advanced detecting means at the same time, from the

公司目前有三条镀锌和二条彩涂连续生产线，都配备先进的生产装备和采用先进的生产工艺，同时配备齐全的检测设备和先进的检测手段，从原辅料到生产过程以至产成品的一系列过程都进行严格的质量控制，特别是经过全厂员工的上下努力，加上完善和科学的管理手段，使得公司的热浸镀锌钢带和彩色涂层钢带产品无论从外观质量以至到力学和工艺性能上都处于国内领先地位，尤其是薄钢带上的涂镀技术在国内为数不多的企业中占有一席之地。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。